ASoC: codec: wcd938x: Convert to GPIO descriptors

ASoC: codec: wcd938x: Convert to GPIO descriptors

of_gpio.h is deprecated, update the driver to use GPIO descriptors.
 - Use dev_gpiod_get to get GPIO descriptor.
 - Use gpiod_set_value to configure output value.

With legacy of_gpio API, the driver set gpio value 0 to assert reset,
and 1 to deassert reset. And the reset-gpios use GPIO_ACTIVE_LOW flag in
DTS, so set GPIOD_OUT_LOW when get GPIO descriptors, and set value 1 means
output low, set value 0 means output high with gpiod API.

The in-tree DTS files have the right polarity set up already so we
can expect this to "just work".

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Steev Klimaszewski <steev@kali.org>
Link: https://patch.msgid.link/20250324-wcd-gpiod-v2-2-773f67ce3b56@nxp.com
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>